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compat_pthread_barrier.h
/*
* Copyright 2015 Red Hat Inc., Durham, North Carolina.
* All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
* Martin Preisler <mpreisle@redhat.com>
*/
#ifndef OSCAP_COMPAT_PTHREAD_BARRIER_H_
#define OSCAP_COMPAT_PTHREAD_BARRIER_H_
#include "oscap_platforms.h"
/*
* This file implements a very slow and basic pthread_barrier_t
* on systems where this implementation isn't available.
*
* One such commonly used system is Apple MacOS X.
*/
#include <pthread.h>
// TODO: Maybe there is a better macro to check here
#ifdef OS_APPLE
// returned to the last thread that hits the trip count
#define PTHREAD_BARRIER_SERIAL_THREAD -1
// 0 is returned to all the other threads that have been waiting
typedef int pthread_barrierattr_t;
typedef struct
{
pthread_mutex_t mutex;
pthread_cond_t cond;
int count;
int trip_count;
} pthread_barrier_t;
int pthread_barrier_init(pthread_barrier_t *barrier, const pthread_barrierattr_t *attr, unsigned int count);
int pthread_barrier_destroy(pthread_barrier_t *barrier);
int pthread_barrier_wait(pthread_barrier_t *barrier);
#endif
#endif